Test review of MP1584 0.8 to 25V 2A DC-DC Step down converter
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- čas přidán 21. 08. 2024
- In this video you will see the voltage regulator MP1584 module is tested under the following conditions:
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Input 15V output 9V at 3A
Input 15V output 9V at 2.5A
Input 15V output 9V at 1.5A
then at
Input 12V output 5V at 3A
Input 12V output 5V at 2.5A
Input 12V output 5V at 2A
Input 12V output 5V at 1.5A
View the datasheet for MP1584
www.monolithic...
Tutorial by Ahmad Shamshiri form Canada
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Thank you for the tests. The results are what everyone would expect, there's no way a bare MP1584 with no heatsink could handle 3A.
So, these modules are OK for sub 2A projects, and even then it's better to use a heatsink.
I'm going to buy a few for my low-powered (sub 1A) projects.
same
Very nice review, thank you for sharing. One comment about the smaller module: This module Not based on MP1584, but either MP2307 (Vin < 23V; 3A) or MP1482 (Vin < 20V; 2A), both using synchronous rectification - that is why they don’t need the Schottky diode (as not found in your video at 2:44), which is mandatory for the MP1584 (larger module). I just discovered when I bought 5 of them and zoomed in finding an MP1482.
Thanks for the info!
Measure the voltage across the boost capacitor, pins 1 and 8, and if it is less than 5 Volts under load then the input voltage is too low (minimum Rds(on) is spec'd at 5 Volts). A good starting figure is Vin >= Vout + 6 Volts. For 9 Volts out, it needs 15 Volts in. Under-voltage lockout (UVLO) is 2.2 Volts on the boost capacitor, and it charges through a switch and diode. At high loads > 65% duty-cycle, the boost capacitor has less time to charge and may require a higher input voltage. All this is in the datasheet. Also, the 4.7 uH inductor is too small for ideal performance.
Fantastic overview, exactly what I wanted to see!
Glad it was helpful!
Tôi muốn mua
@@robojax My friend will this do 4.2 lithium battery down to 3v?
12 to 9V is a small delta. The module probably also has a max input current.
i was going to choose mp2307 earlier for powering my esp8266 since it is easily available, for commercial project. Now i have dropped this idea, need to read spec sheets very carefully:) MP2307 has typical switching frequency of 300KHz while MP1584 has Fsw 900KHz and goes to 1.5MHz (though not recommended). So MP1584 is superior in every aspect. Now i am just in dilemma whether to use ACT4088 (typical Fsw 1.2MHz) or MP1584 (typical Fsw 900KHz), both are strong. Assuming higher the switching frequency less ripples in output voltage, only disadvantage it is non-synchronous and hence less power efficient.
It is two different modules with two different ICs!
Large one is MP1584, smaller one is MP2307!
You can see that smaller one have no diode on output because it is synchronous converter!
MP2307 is more efficient but input range is 23V vs 28V for MP1584
@Mai Mariarti Which one can be used to charge mobile supplied variable DC input? Will it be safe?
@Mai Mariarti Hi, i want to use an alternator hooked with bridge rectifier & smoothing capacitor. Then use one of these to charge cellphone. Input DC will be varying while output DC (5V) should be constant. Which one is better in mentioned scenario? MP1584 or MP2307?
u saved me man
@@swapniljoshi9997 you may use any of them just set voltage b4 plugin device
thank you. these module benchmarks have been very useful for me
Thank you for the thorough testing, that was very enlightening.
You are welcome. The best thank you for me is to subscribe to my channel. Thank you.
good info. thanks for contributing. I use these little converters all over the place and never have any issues. I dont push them though.
Very informative while performing robust test. Thanks for your time.
Unfortunately you do not use ESR capacitors on the PCB !
There are only the most necessary parts for the PCB to work!
A very good review.
There is inadequate thermal mass (copper area or heat sink) for the higher Amperes but the thermal shutdown was too fast at 2.5A. Possibly you had insufficient cool down between experiments? Also, Chinese chip markings are suspect more often than not. A real MP1584 should handle 3A. Possibly these are deficient copies of the MP1584.
Thank you for the reviews. It would be interesting to know the efficiency of the converters.
You are welcome. You are right. I have done for some other modules and forgot to do it with this. I'll keep that in mind. Thanks
Thanks you just saved me 14 mins, that's exactly what I'm here for lol. I've bookmarked your channel and video for future reference @Robojax, thanks for the upload all the same.
That was interesting, thanks 😁
Glad you enjoyed it!
Very Usefull 💯♥
my question is will it work fine if the supply is an unstable dc supply like an output from bridge rectifier of motorcycle altenator. Thank You for this comparison.
thank you for sharing knowledge
You are welcome.
Thank you for not skipping the ads and keep watching them. This will help me a lot.
you are best
So are you. Thanks.
this regulator one of the most efficient for this price and size. How ever I need bigger one, I really did not see much efficient than this in bigger scale. What should I do, should I cascade them ?
yes can.
if you vary the input voltage does the output voltage stay fixed to what it was set to? e.g set output to 7v but input voltage fluctuates between 9 to 16v? would output remain steady at 7v?
if the input voltage is variable, then yes the output will stay stable regardless of changes at input. This has variable input and will keep output fixed.
So withe the larger D-Sun version, I warned to use it with my 3d printer's 24v PSU to give me 12v for a strip of LEDs. How odd that its input voltage is 23v not 24v. Who has 23v as standard?
12V -> 9V Use 22uH. 4.7uH to less.
Testing for 3 amps is invalid as the specs are "1.8A Sustained " for the Mini360. I couldn't find the sustained value for the Mini MP1584EN, but it surely is not the rated 3A peak for both boards.. As far as I know, "peak" means "short transient"; therefore, not "sustained". Keep in mind that the specs for either board CHIPS are different than the specs for the BOARDS, as according to the CHIP spec sheets, the BOARD designers select from a list of support component values, which set the characteristics of the BOARDS.
Hi, If you see the datasheet, it is rated at 3A www.monolithicpower.com/en/documentview/productdocument/index/version/2/document_type/Datasheet/lang/en/sku/MP1584/
I've been using this mini buck converter for my direct to PV/Solar panel 100w to my 12vdc fan. is it normal that it gets very hot on start ?
thank you!
You're welcome!
Pm me can you to install do solar panel of charger :
The sellers of these modules tell you that a heat sink is required for larger currents.
Yes. I have also mentioned that it should be cooled however possible.
I AM USING LM 2596 IC BUCK CONVERTER , I NEED TO REDUCE SOLAR PANEL 22V TO 12V....BUT NOW INPUT AND OUT PUT SAME VOLT....PRESET ADJUST ..BUT NO CHANGES OUT PUT VOLT ...WHAT IS THE REASON ....
Hi,
Can I use this Mini360 to step down the voltage of an 18650 battery to ~ 3,2 V ? 🤔😕
Thanks !
Best Regards,
Does the set output voltage change with different input voltages? This is an important point of interest to me.
of course not. the output stays as long as you don't bed below the minimum. This is true for all converters.
I have a battery drill I would like to step from down 20v 2a to 12v at 1.5 amp to another battery drill I wonder if the module will handle i...t thanks
first I don't remember what was the maximum current I tested. let's say it was 1.5A, then yes.
Please if i connect battery to this and then this to breadboard, how much current in amps maximum i can then take from the breadboar
For sure 2A is not a problem with the breadboards
I like the video, but I need to thumbs down
the large board uses MP1584 but the small board uses MP2307
and efficiency, where are the efficiency tests?
you are right. when I was going to make this video, I didn't expect anyone would watch it. My later videos on converts have efficiency and full details.
👍❤️👍
Thanks.
I just order o few of the larger size. What gets hot? would a small heatsink fix the issue. Is it the coil or the chip?
Yes it will.
Hello robojax ... I'm following your work thank you.
I need a good step down module that can handle 18v to 8.4v 2A.
What do you recommend? Would you help?
Hello, I have review of Step Down Convert also called "Buck converters" you can search my channel. but his is the best one czcams.com/video/ErqyxBvkdPk/video.html
Hi, have you tested buck converters with CN3903 ? Thanks.
Hello, see my channel on Energy and power called WattHour youtube.com/@wattHour
Did you watch them on osciloscope? These modules are noisy as duck.
No I did not. when I was testing them, I could not hear anything as I remember.
6v to 3v? And if I use aa battery and Inout voltage decrease, the output voltage is fixed?
Yes, that's how most of the modern buck (and also boost) stabilizers work - they try to keep the output voltage constant, no matter what you feed in, down to their specified voltage limits. mp1584 should keep your output stable down to 4.5V of input.
The power supply you are using is
voltage V and Current I (in ampere A) so you will always get less than what comes to the input. Example input 10V, current 1A 10x1=10W and output can never be more than 9.9W (assuming 90% efficiency). For example for 5V output can get get 9.9W/5V=1.98A. So calculated it with respect to power.
@@robojax minor correction here -- if it's 90% efficient, it can provide 9W, or 1.8A @ 5V.
I have 4.2v lion cell and I want to use it to step down the 4.2v to 3.6v for 1watt led will it work or not I know I can just simply use current limiting resistor but as the battery gets low the brightest of led also gets low ( I think ) that's why I want to use buck converter to maintain the output at 3.6v. please reply sir I don't know how to operate 3.6v led on 4.2v without loosing brightness, as the battery gets low.
I'm looking for something who can output 3.6v constantly untill battery gets low from 4.2v to 3.6v so I led can't loose brightness until unless battery gets lower than 3.6v
Hello, why you want to limit the current? if LED needs ONE watt, it will not take more. so first you should not limit it. But you have to provide 3.6V if it say 3.6V the Lithium Ion battery voltage is 3.7V when you measure it as 4.2V that is charge cut off voltage. so people don't call it 4.2V, rather it is called 3.7V so I believe and it is 1 cell. so your LED seems to work with 1 Cell and you don't need converter in between your power supply and LED. But if its, then if your LED needs 3.6V 1W, the current I=P÷V, P is power and I is current in Ampere so I=1W÷3.6V=0.27A or 270mA current. Do not use resistor as it wastes energy as heat. use this module and set the output to 3.6V and do not worry about current. Good luck.. Pease. Ahmad from Canada
@@robojax thank you very much for your reply sir
you are welcome.
could the voltage be changed with an ardunio ? if so could you let me know what i might solder?
Yes it could . But you need to hardware and code to make it happen and to modify the module. I am not sure if you are going into that rout.
cool
bro which buch converter is good to convert 12v car battery to 5volt 5amp DC -DC
This one. Any voltage up to 30V to 5V, 5A czcams.com/video/OjDIUF7lebw/video.html
the smaller one is not mp1584, it is mp2307
Thank you for letting us know.
Is there a way to make it into a constant current mode?
no this module.
My input 12v 7ah, mini 360, and it burst. how much input current should be?
I did not understand the "mini 360" but to calculate the current (current is shown as I ) I = P÷V and P=IxV do this calculator in both output and input. Just keep in mind the the output always has about 10% less than the input.
Can it step down 3.7v to 1.5v? Which mini step down buck can I use??
both can be used. But check the datasheet and it show you can get fro 0.8V up.
I think, the smaller one is mp2307 not mp1584
you may be right. Now I can't change it.
Is good to 24v to 12v and 0.40mAh? For a cooler
yes this is "step down" meaning output is always lower than input.
Hey I want to power a raspberry pi from this and for that i have an input of 12v 1A and the output required is 5v 3A can this solve the problem??
Hi, I did the test for voltage and current. it is you who decide if it works for you or not.
@@robojax As you are expert in this topic I just want suggestion on it! Does it convert 12v 1A to 5v 2a?
i have adapter output 5v 1.5A
can I use this buck to convert to 4.2v?
Yes you can. But if you are planning to charge lithium battery, this does not control the current ans that is very important if you want to your battery to last longer. You need constant current which limits the current and subsequently reduces the voltage.
do you think this module can handle:
24Vdc in
12-20Vdc out
1 - 1.5A draw
?
I believe I have answered your question in the video. Please watch it and don't escape.
@@robojax I asked ten minutes in before you got there! Alas it seems this module is suitable. Thank you
LOL okay. you are welcome.
@@robojax it seems one mistake in your testing is not using an oscilloscope to test noise. The smps at 24v in 20v out 1.5A draw has 2vpp noise. Totally unacceptable for some applications.
Can it charge my 1.5×2 aaa cell with 5.volt mobile charger. What is best module for charging aaa and aa cell with from usb mobile charger. Can I put heat sink on it
Yes you can if you have some way to turn it OFF when charging is done. You my use this module with any power supply to charge your battery czcams.com/video/hacb6rNQDfc/video.html
Robojax thanks
Sir! Do you make giveaway. Because I can't find one in my local electronic shop. Those sold online are very expensive. Thanks in advance sir!
Hello, I don't have them. I made video and after that God know where they are as they are very tiny.
🤣🤣🤣
they're $1 on eBay👀
@@ZeroMass calculate the shipping please. PIN- 700138
hello, where did you buy the current load device?
Hello, I just added links to different sources for the 10A electronic load.
@@robojax
Please tell me is those module useful for motor
I want constant voltage speed for n20 micro gear motor
Should I go for linear regulator or buck converter is suitable
2 using Motor
Each is 12v 1amp
What's the consumption at 12V with no load?
If have not mention it then it is 1ma or less than that.
@@robojax Thanks!
where you can buy the machine you use to test the regulators
thanks
If you are in US or Canada here www.amazon.ca/dp/B07B466TGW and www.amazon.ca/dp/B07B3RWCFV
if you elsewhere eBay would be better option.
Robojax I mean the device that has a fan and lcd screen
you have a plan and list of components to make it or kits
you can find it here: tinyurl.com/yd5mnzxg
Can I control DC motor speed by it ...??
No. this is a fixed voltage. Most DC motor speed are controlled using PWM. Search my channel for PWM. Here is how search for a particular video in a Channel czcams.com/video/OhkUceBWcHs/video.html
I have one but it is not working, no voltage is coming out.
if wiring is correct, it must be dead.
@@robojax I will buy another, it costs 20 CZK = 0.75 cents maybe
@@robojax BTW I have exactly the same wiring as you.
Good luck and stay safe.
u did not tell difference in both.
it is the same chip. two module. current will not be affected.
Robojax oh thanks u so much for reply . Then what is for 100 and R47 block there . What is it's meaning. Can I put heat sink on it. Can it charge my 1.2×2 aaa cell with 5.volt mobile charger. What is best module for charging aaa and aa cell with from usb mobile phone charger.
You are welcome. There are 100s but I have not tested any so far. So can't suggest.
But @alexei says MP2307 is the small module. Right?
This presentation had its interesting moments, but overall, it was sloppy and confusing by the end.